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Ionization Energy03:12

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The amount of energy required to remove the most loosely bound electron from a gaseous atom in its ground state is called its first ionization energy (IE1). The first ionization energy for an element, X, is the energy required to form a cation with 1+ charge:
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Related Experiment Video

Updated: Jun 16, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

Time-energy analysis of above-threshold ionization.

L Guo1, S S Han, J Chen

  • 1Key laboratory for Quantum Optics and Center for Cold Atom Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.

Optics Express
|February 23, 2010
PubMed
Summary

Researchers developed a novel Wigner-distribution-like function to analyze time-energy distributions of photoelectrons. This method reveals the time-energy spectrum in above-threshold ionization and investigates interference patterns in intense laser fields.

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Last Updated: Jun 16, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

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Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry
16:11

Thermochemical Studies of Ni(II) and Zn(II) Ternary Complexes Using Ion Mobility-Mass Spectrometry

Published on: June 8, 2022

Area of Science:

  • Atomic Physics
  • Quantum Optics
  • Laser-Matter Interactions

Background:

  • Understanding electron emission dynamics is crucial in intense laser fields.
  • Above-threshold ionization (ATI) presents complex time-energy distributions.
  • Existing methods may not fully capture the time-energy correlations in ATI.

Purpose of the Study:

  • To introduce a Wigner-distribution-like function for analyzing time-energy distributions.
  • To present the time-energy distribution of photoelectrons in ATI for the first time.
  • To investigate interference patterns in ATI using different laser frequencies.

Main Methods:

  • Development of a Wigner-distribution-like function.
  • Application of the function to analyze photoelectron spectra.
  • Investigation of ATI in intense laser fields with varying frequencies.

Main Results:

  • The proposed function successfully analyzes time-energy distributions.
  • The time-energy distribution of photoelectrons in ATI is presented.
  • Interference patterns in ATI are characterized under different frequency conditions.

Conclusions:

  • The Wigner-distribution-like function provides a powerful tool for studying time-energy dynamics in photoemission.
  • This work offers new insights into the fundamental processes of above-threshold ionization.
  • The findings contribute to the understanding of electron dynamics in strong laser fields.